4 Answers
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AAPT allows you to view, create, and update ZIP-compatible archives (ZIP, JAR, and APK). It can also compile resources into binary assets. It is the base builder for Android applications.

Of course you can ship .so files from an application, but if you want to use it, you will need reverse engineering plugins and these are not very recommended because of the complexity. I don't know anyone for Android, but there are a bunch of environments plugins.

AAPT stands for Android Asset Packaging Tool. The Android Asset Packaging Tool (aapt) takes your application resource files, such as the AndroidManifest.xml file and the XML files for your Activities, and compiles them.This is a great tool which help you to view, create, and update your APKs (as well as zip and jar files). It can also compile resources into binary assets. It is the base builder for Android aplications. This tool is a piece of the SDK (and assemble framework) and permits you to see, make, and redesign Zip-perfect chronicles (zip, jolt, apk)

When your application is compiled, AAPT generates the R class, which contains resource IDs for all the resources in your res/ directory. For each type of resource, there is an R subclass (for example, R.drawable for all drawable resources), and for each resource of that type, there is a static integer (for example, R.drawable.icon). This integer is the resource ID that you can use to retrieve your resource.